Improvement in machines for drilling coal



I; F. TAYLOR.

Machines for DriHing Goal.

N0.15 5,122. g Patented Sept.'I5,18 74 @x S\ S a ATTORN EYS.

' VENTOR UNITED STATES PATENT OFFICE.

JAMES F. TAYLOR, OF JEDDO, OHIO, ASSIGNOR OF ONE-HALF HIS RIGHT TO JOHNLAYTON, OF SAME PLACE.

IMPROVEMENT IN MACHINES FOR DRILLING COAL.

Specification forming part of Letters Patent No. 155,122, datedSeptember 15, 1874; application tiled April 13, 1874.

To all whom it may concern:

Be it known that 1, JAMES F. TAYLOR, of Jeddo, in the county ofJefferson and State of Ohio, have invented certain new and usefulImprovements in Coal and Clay Drilling-Machines, of which the followingis a specification:

My invention relates to hand drilling-machines for coal and clay banks,and in which the frame is supported and firmly pinned to the base andarch of the pit; and the special features of my said invention consistof a standard or frame of two lapping sections, in combination withholding embracing-straps and removable supporting-pins, whereby thestandard is made extensible and the upper section supported by the pinsinserted into holes of the lower section also, in the combination ofremovable and reversible bearingpins with the drill-nut and thedrill-screw spindles, whereby the nut-bearing pins may be reversed tosustain the drill-spindle nut at work in an upward or downwardinclination to the standard, or removed to allow the nut to be turned inposition to draw it out with the drill-spindle when working horizontallywithout interfering with the pinned position of the supporting-standard;and in the combination of an extensible standard with a hinged sectionthereof, the drill-spindle, and its feeding-nut, whereby thesupporting-standard may be opened, to allow of the removal of the drillspindle and nut when working in such positions as to prevent the turningof the nut to bring its ends vertically within the open space of thestandard, so that in any position of the drill-spindle it may be removedto make a new boring, either by withdrawing its bearing-pins or openingone side of the supporting-standard.

In the accompanying drawings, Figure 1 represents a view, inperspective, of a coaldrill machine embracing my invention; Fig. 2, anelevation, with the hinged side of the standard opened to let thedrill-spindle be removed when it is working in an oblique position; andFig. 3, a vertical section.

The frame is a standard of two sections, A and A, with sides lapped, theone with the other, so as to form extension-branches, which are unitedand made extensible upon each other by straps B embracing and holdingthe lapped parts together, so that they may be adjusted to make thestandard longer or shorter, to suit difi'erent heights of pits, with thelower ends of the upper section supported upon pins 0, inserted intoholes a in the lower section. The foot of the lower section A isprovided with claw-points D, and the head of the upper section A with anadjustable dog or screwpoint, E, for entering the bottom and top of thepit, to hold the standard firmly in position. Both sections of thestandard are provided with holes a and I), made horizontally throughtheir lapped branches, and into their holes a and b of the sections Aand A the bearing-pins F, for the nut G of the drillspindle H, areinserted from the side next the wall or bank, to hold the drill-spindlehigher or lower, while the supporting-pins O for the upper section areinserted from the outer side of the standard. The pin-bearings F for thenut G are inserted into their openings, so that they can be drawn outand removed, and they are hook-shaped, to clasp the journaled ends 0 ofthe nut G, and hold it in place with the nut ends 0 bearing against theface of the standard, as shown in Fig. 1. These bearing-pins F hold thejournaled nut in place, and when the drill-spindle is set to boreobliquely up ward these bearin g-pins have their hooked or clasped endsturned up, as shown in Fig. 1; but when the boring is being made withthe drill-spindle inclining downward, then these bearing-pins must beturned to bring their book ends downward, the object being to bring thepressure of the nut upon the pins and not upon their hooks, as shown indotted lines in Fig. 3. The drill-spindle is provided with ascrew-thread, d, and passing through the central portion of the nut,feeds the drill as the spindle is turned by its crankhandle. By havingthe drill bearing-pins removable, both the nut and the drill-spindle canbe removed and replaced by others. This is done when the drill isworking in a horizontal position by drawing out the hook-pins andturning the arms 0 of the nut G so as to bring them within the verticalopening I, so that the arms of the nut can be drawn out through theopening I between the standard branches. When, however, thedrill-spindle is working at an angle either up or down this removal ofthe nut cannot be effected in this way, because the shoulders or head ofthe nut would strike against the sides of the standards, as shown inFig. 3.

To accomplish the removal of the drill-spindle and its nut in thisposition,I hinge the lower end of one side, a, of the lower section, tothe foot at J, and connect the upper end of the contiguous separatebranch f of the upper section to the head by a pin, g, passing throughthe upper end of the branch f, and secured by a key, h, so that byremoving the latter the two sides 0 and fof the standard'can be openedand turned down upon the foot-hinge J to open the standard, and thusallow the drill-spindle and its nut to be removed and the position ofthe drill changed higher or lower, as may be desired, to drill the hole.This hinged side may be opened and closed without disturbing theposition of the standard when secured, and when so opened thenut-bearing pin-hooks can be changed and inserted either into the holesof the upper or lower standards, to incline the drill either up or down,according to the position it may be desired to drill the hole.

The advantage of the removable bearinghook pins and the hinged side is,that the screw-spindle may be removed Without separating it from the nutor sliding it out upon its screw-threads, which would soon destroy them,by reason of the weight and pressure of the spindle against its threads;but by removing them intact the screwthreads are preserved from injuryand the removal of the drill made more readily.

The drill-point K is of a greater diameter than that of thescrew-spindle, so that a short drill can be used to bore a deep hole, asthe spindle follows it in.

A spindle having eight threads to the inch will bore holes in fire-clayor coal banks from three to six feet deep, and with twelve threads tothe inch the hardest rock can be bored.

The dog-screw point E can be entered and removed from its hold in thetop by handles, and the standard set and secured in any desiredposition.

I claim.

1. A coal-borin g machine having a standard of two lapping extensiblesections, A and A, secured together by embracing strap-irons B, incombination with the holes a and the removable supporting pins 0 for theupper standard A, substantially as and for the purpose described.

2. The reversible bearing-pins F, in combination with the drill-spindleH and armed nut G, as described.

3. The hinged branches cf, in combination with the supporting-standard AA, the armed nut G, and its drill-spindle H, substantially as described,whereby the working parts may be removed from the standard and the borewhen operating in oblique positions.

JAMES F. 1 TAYLOR.

mark. Vvitnessesz JEFF SALTSMAN, J. G. SPEEDY.

